Restaurants fit for local foodies around Union Square?

My wife and I are between homes and are staying at a hotel in Union Square -- we are both foodies and have lived in SF for 6 years (mostly in the Mission), and like most SFers we typically stay away from Union Square. Now that we are stuck here without a car for a week or so, any recommendations for places to eat within walking distance? ALL food types suggestions are welcome. Cheers!

(By the way, to calibrate, here are our tastes: best tacos: El Toyanense truck at Harrison and 19th, best Indian: Dosa's, best Chinese: Fang, best Dim Sum: Yank Sing, best Napolitano style pizza: Beretta, best sushi: Live, best place that in-laws pay for: Michael Mina, best Peruvian: Limon Rotisserie, best NY style pizza: none because its all crap in SF.)